Frost Dates for 97041 — Parkdale, Oregon

Half of springs at Parkdale 1 NNE, OR see their last 32°F night by May 13; only one in ten is past it by April 26, and one in ten still has one after June 3. Planting tender crops after May 22 leaves a 30% risk of a frost on them, after May 27 20%, and after June 3 10%. The 21 days between the even-odds date and the one-in-ten date is narrower than at 55% of the 103 Oregon stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by October 3 in half of years, as early as September 15 one year in ten, and holds off past October 19 one year in ten. A hard freeze of 28°F follows 17 days later, around October 20; in spring the one-in-ten date for 28°F is May 9, 25 days before the 32°F one. The freeze-free season lasts 142 days in a typical year, shorter than at 83% of the 103 Oregon stations; it reaches 167 days one year in ten and falls short of 116 one year in ten. On average 134 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 26 days longer, to about June 8, and return around September 15. Severe cold of 16°F or below comes in 92% of winters, usually between December 11 and February 5.

July is the warmest month at Parkdale 1 NNE, OR, averaging 80°F by day and 49°F at night; December is the coldest at 38°F and 27°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From July to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 73% of years and June still brings one in 14% of years.

Warmth for growing adds up to 1,579 growing degree days a year (base 50°F), fewer than at 86% of the 103 Oregon stations. 25% of them (402) have built up by the end of June, and July adds the most, 443. Precipitation totals 36.2 inches a year, most in December (6.9") and least in July (0.3"); May to September bring 13% of it.

The nearest other station, Hood Rvr Exp Stn, OR, 13 miles north of Parkdale and 1,020 feet lower, has a last frost 23 days earlier (April 20), a first frost 10 days later (October 13), a season 35 days longer.

The first measurable snow (0.1 inch or more) in Parkdale usually arrives around November 25, and the last of the season around March 17. Those are the middle dates across the winters of 1991–2020 at Parkdale 1 NNE, OR, 2.2 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 57 days after the last snow.

ZIP 97041 is 2 miles from Parkdale 1 NNE, OR, which stands at 1,520 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 97041 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.